The sword refers to Offer_Programming questions_8

Topic description

A frog can jump up 1 steps at a time, or 2 steps at a time. Find how many ways the frog can jump up a n-level stair.

class Solution {
public:
    int jumpFloor(int number) {
        vector<int>vt;
        vt.push_back(1);
        vt.push_back(2);
        int i;
        for(i=2;i<number;i++){
            vt.push_back(vt[i-1] + vt[i-2]);
        }
        return vt[number-1];
    }
};